
import pandas as pd
df = pd.DataFrame({'区域' : ['西安', '西安', '西安', '西安', '郑州', '西安'],
                  '10月份销售' : ['0.477468', '0.195046', '0.015964', '0.259654', '0.856412', '0.259644'],
                  '9月份销售' : ['0.347705', '0.151220', '0.895599', '0236547', '0.569841', '0.254784']})
print(df)
print(df['区域'].value_counts())